Introductory undergraduate text for differential geometry to replace Kobayashi & Nomizu

Question

Began an undergraduate introductory course on differential geometry this semester but the text we are using is Kobayashi & Nomizu, which I'm finding to be a little too advanced for an undergraduate introductory course in DG. There are also no graded homeworks, quizzes, or exams so a text with solved problems would be preferred. If anyone is familiar with KN, are there any texts that follow similiar material but with more concrete examples and worked solutions?

Comments

specifically: Good problem book in differential geometry

and also References for Differential Geometry

Answer 1

Check J.P. Fortney "Visual Introduction to differential forms....."  

Notes of Paul Duffell "Geometric Concepts in Physics"

Check the blog Bounded Rationality "Manifolds a Gentle Introduction"

I myself do not deal with Differential Geometry, so I dont know if my answer will do justice.